I like the idea, it's quite creative :)! Submitting a gif as cover is also really smart as it really stands out from the other submissions. Picking up the last 10 is a bit slow though, it probably would've been more fun (in my opinion) to increase the amount of spawns over time.

The idea is simple but it is really cool. The dialogue is not something very surprising but makes the game much better even if the game is a little slow. Good job on making something that feels right with just the little time we had!